# uncompyle6 version 3.2.3
# Python bytecode 3.6 (3379)
# Decompiled from: Python 3.6.8 |Anaconda custom (64-bit)| (default, Feb 21 2019, 18:30:04) [MSC v.1916 64 bit (AMD64)]
# Embedded file name: distutils\command\build_ext.py
"""distutils.command.build_ext

Implements the Distutils 'build_ext' command, for building extension
modules (currently limited to C extensions, should accommodate C++
extensions ASAP)."""
import contextlib, os, re, sys
from distutils.core import Command
from distutils.errors import *
from distutils.sysconfig import customize_compiler, get_python_version
from distutils.sysconfig import get_config_h_filename
from distutils.dep_util import newer_group
from distutils.extension import Extension
from distutils.util import get_platform
from distutils import log
from site import USER_BASE

extension_name_re = re.compile("^[a-zA-Z_][a-zA-Z_0-9]*(\\.[a-zA-Z_][a-zA-Z_0-9]*)*$")


def show_compilers():
    from distutils.ccompiler import show_compilers

    show_compilers()


class build_ext(Command):
    description = "build C/C++ extensions (compile/link to build directory)"
    sep_by = " (separated by '%s')" % os.pathsep
    user_options = [
        ("build-lib=", "b", "directory for compiled extension modules"),
        ("build-temp=", "t", "directory for temporary files (build by-products)"),
        (
            "plat-name=",
            "p",
            "platform name to cross-compile for, if supported (default: %s)"
            % get_platform(),
        ),
        (
            "inplace",
            "i",
            "ignore build-lib and put compiled extensions into the source "
            + "directory alongside your pure Python modules",
        ),
        (
            "include-dirs=",
            "I",
            "list of directories to search for header files" + sep_by,
        ),
        ("define=", "D", "C preprocessor macros to define"),
        ("undef=", "U", "C preprocessor macros to undefine"),
        ("libraries=", "l", "external C libraries to link with"),
        (
            "library-dirs=",
            "L",
            "directories to search for external C libraries" + sep_by,
        ),
        ("rpath=", "R", "directories to search for shared C libraries at runtime"),
        ("link-objects=", "O", "extra explicit link objects to include in the link"),
        ("debug", "g", "compile/link with debugging information"),
        ("force", "f", "forcibly build everything (ignore file timestamps)"),
        ("compiler=", "c", "specify the compiler type"),
        ("parallel=", "j", "number of parallel build jobs"),
        ("swig-cpp", None, "make SWIG create C++ files (default is C)"),
        ("swig-opts=", None, "list of SWIG command line options"),
        ("swig=", None, "path to the SWIG executable"),
        ("user", None, "add user include, library and rpath"),
    ]
    boolean_options = ["inplace", "debug", "force", "swig-cpp", "user"]
    help_options = [("help-compiler", None, "list available compilers", show_compilers)]

    def initialize_options(self):
        self.extensions = None
        self.build_lib = None
        self.plat_name = None
        self.build_temp = None
        self.inplace = 0
        self.package = None
        self.include_dirs = None
        self.define = None
        self.undef = None
        self.libraries = None
        self.library_dirs = None
        self.rpath = None
        self.link_objects = None
        self.debug = None
        self.force = None
        self.compiler = None
        self.swig = None
        self.swig_cpp = None
        self.swig_opts = None
        self.user = None
        self.parallel = None

    def finalize_options(self):
        from distutils import sysconfig

        self.set_undefined_options(
            "build",
            ("build_lib", "build_lib"),
            ("build_temp", "build_temp"),
            ("compiler", "compiler"),
            ("debug", "debug"),
            ("force", "force"),
            ("parallel", "parallel"),
            ("plat_name", "plat_name"),
        )
        if self.package is None:
            self.package = self.distribution.ext_package
        self.extensions = self.distribution.ext_modules
        py_include = sysconfig.get_python_inc()
        plat_py_include = sysconfig.get_python_inc(plat_specific=1)
        if self.include_dirs is None:
            self.include_dirs = self.distribution.include_dirs or []
        if isinstance(self.include_dirs, str):
            self.include_dirs = self.include_dirs.split(os.pathsep)
        if sys.exec_prefix != sys.base_exec_prefix:
            self.include_dirs.append(os.path.join(sys.exec_prefix, "include"))
        self.include_dirs.append(py_include)
        if plat_py_include != py_include:
            self.include_dirs.append(plat_py_include)
        self.ensure_string_list("libraries")
        self.ensure_string_list("link_objects")
        if self.libraries is None:
            self.libraries = []
        if self.library_dirs is None:
            self.library_dirs = []
        else:
            if isinstance(self.library_dirs, str):
                self.library_dirs = self.library_dirs.split(os.pathsep)
        if self.rpath is None:
            self.rpath = []
        else:
            if isinstance(self.rpath, str):
                self.rpath = self.rpath.split(os.pathsep)
        if os.name == "nt":
            self.library_dirs.append(os.path.join(sys.exec_prefix, "libs"))
            if sys.base_exec_prefix != sys.prefix:
                self.library_dirs.append(os.path.join(sys.base_exec_prefix, "libs"))
            if self.debug:
                self.build_temp = os.path.join(self.build_temp, "Debug")
            else:
                self.build_temp = os.path.join(self.build_temp, "Release")
            self.include_dirs.append(os.path.dirname(get_config_h_filename()))
            _sys_home = getattr(sys, "_home", None)
            if _sys_home:
                self.library_dirs.append(_sys_home)
            if self.plat_name == "win32":
                suffix = "win32"
            else:
                suffix = self.plat_name[4:]
            new_lib = os.path.join(sys.exec_prefix, "PCbuild")
            if suffix:
                new_lib = os.path.join(new_lib, suffix)
            self.library_dirs.append(new_lib)
        if sys.platform[:6] == "cygwin" or sys.platform[:6] == "atheos":
            if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):
                self.library_dirs.append(
                    os.path.join(
                        sys.prefix, "lib", "python" + get_python_version(), "config"
                    )
                )
            else:
                self.library_dirs.append(".")
            if sysconfig.get_config_var("Py_ENABLE_SHARED"):
                if not sysconfig.python_build:
                    self.library_dirs.append(sysconfig.get_config_var("LIBDIR"))
                else:
                    self.library_dirs.append(".")
                if self.define:
                    defines = self.define.split(",")
                    self.define = [(symbol, "1") for symbol in defines]
                if self.undef:
                    self.undef = self.undef.split(",")
                if self.swig_opts is None:
                    self.swig_opts = []
                else:
                    self.swig_opts = self.swig_opts.split(" ")
                if self.user:
                    user_include = os.path.join(USER_BASE, "include")
                    user_lib = os.path.join(USER_BASE, "lib")
                    if os.path.isdir(user_include):
                        self.include_dirs.append(user_include)
                    if os.path.isdir(user_lib):
                        self.library_dirs.append(user_lib)
                        self.rpath.append(user_lib)
                if isinstance(self.parallel, str):
                    pass
        try:
            self.parallel = int(self.parallel)
        except ValueError:
            raise DistutilsOptionError("parallel should be an integer")

    def run(self):
        from distutils.ccompiler import new_compiler

        if not self.extensions:
            return
        if self.distribution.has_c_libraries():
            build_clib = self.get_finalized_command("build_clib")
            self.libraries.extend(build_clib.get_library_names() or [])
            self.library_dirs.append(build_clib.build_clib)
        self.compiler = new_compiler(
            compiler=self.compiler,
            verbose=self.verbose,
            dry_run=self.dry_run,
            force=self.force,
        )
        customize_compiler(self.compiler)
        if os.name == "nt":
            if self.plat_name != get_platform():
                self.compiler.initialize(self.plat_name)
        if self.include_dirs is not None:
            self.compiler.set_include_dirs(self.include_dirs)
        if self.define is not None:
            for name, value in self.define:
                self.compiler.define_macro(name, value)

        if self.undef is not None:
            for macro in self.undef:
                self.compiler.undefine_macro(macro)

        if self.libraries is not None:
            self.compiler.set_libraries(self.libraries)
        if self.library_dirs is not None:
            self.compiler.set_library_dirs(self.library_dirs)
        if self.rpath is not None:
            self.compiler.set_runtime_library_dirs(self.rpath)
        if self.link_objects is not None:
            self.compiler.set_link_objects(self.link_objects)
        self.build_extensions()

    def check_extensions_list(self, extensions):
        """Ensure that the list of extensions (presumably provided as a
        command option 'extensions') is valid, i.e. it is a list of
        Extension objects.  We also support the old-style list of 2-tuples,
        where the tuples are (ext_name, build_info), which are converted to
        Extension instances here.
        
        Raise DistutilsSetupError if the structure is invalid anywhere;
        just returns otherwise.
        """
        if not isinstance(extensions, list):
            raise DistutilsSetupError(
                "'ext_modules' option must be a list of Extension instances"
            )
        for i, ext in enumerate(extensions):
            if isinstance(ext, Extension):
                continue
            if not isinstance(ext, tuple) or len(ext) != 2:
                raise DistutilsSetupError(
                    "each element of 'ext_modules' option must be an Extension instance or 2-tuple"
                )
            ext_name, build_info = ext
            log.warn(
                "old-style (ext_name, build_info) tuple found in ext_modules for extension '%s'-- please convert to Extension instance",
                ext_name,
            )
            if not (isinstance(ext_name, str) and extension_name_re.match(ext_name)):
                raise DistutilsSetupError(
                    "first element of each tuple in 'ext_modules' must be the extension name (a string)"
                )
            if not isinstance(build_info, dict):
                raise DistutilsSetupError(
                    "second element of each tuple in 'ext_modules' must be a dictionary (build info)"
                )
            ext = Extension(ext_name, build_info["sources"])
            for key in (
                "include_dirs",
                "library_dirs",
                "libraries",
                "extra_objects",
                "extra_compile_args",
                "extra_link_args",
            ):
                val = build_info.get(key)
                if val is not None:
                    setattr(ext, key, val)

            ext.runtime_library_dirs = build_info.get("rpath")
            if "def_file" in build_info:
                log.warn("'def_file' element of build info dict no longer supported")
            macros = build_info.get("macros")
            if macros:
                ext.define_macros = []
                ext.undef_macros = []
                for macro in macros:
                    if not (isinstance(macro, tuple) and len(macro) in (1, 2)):
                        raise DistutilsSetupError(
                            "'macros' element of build info dict must be 1- or 2-tuple"
                        )
                    if len(macro) == 1:
                        ext.undef_macros.append(macro[0])
                    else:
                        if len(macro) == 2:
                            ext.define_macros.append(macro)

            extensions[i] = ext

    def get_source_files(self):
        self.check_extensions_list(self.extensions)
        filenames = []
        for ext in self.extensions:
            filenames.extend(ext.sources)

        return filenames

    def get_outputs(self):
        self.check_extensions_list(self.extensions)
        outputs = []
        for ext in self.extensions:
            outputs.append(self.get_ext_fullpath(ext.name))

        return outputs

    def build_extensions(self):
        self.check_extensions_list(self.extensions)
        if self.parallel:
            self._build_extensions_parallel()
        else:
            self._build_extensions_serial()

    def _build_extensions_parallel(self):
        workers = self.parallel
        if self.parallel is True:
            workers = os.cpu_count()
        try:
            from concurrent.futures import ThreadPoolExecutor
        except ImportError:
            workers = None

        if workers is None:
            self._build_extensions_serial()
            return
        with ThreadPoolExecutor(max_workers=workers) as (executor):
            futures = [
                executor.submit(self.build_extension, ext) for ext in self.extensions
            ]
            for ext, fut in zip(self.extensions, futures):
                with self._filter_build_errors(ext):
                    fut.result()

    def _build_extensions_serial(self):
        for ext in self.extensions:
            with self._filter_build_errors(ext):
                self.build_extension(ext)

    @contextlib.contextmanager
    def _filter_build_errors(self, ext):
        try:
            yield
        except (CCompilerError, DistutilsError, CompileError) as e:
            if not ext.optional:
                raise
            self.warn('building extension "%s" failed: %s' % (ext.name, e))

    def build_extension(self, ext):
        sources = ext.sources
        if sources is None or not isinstance(sources, (list, tuple)):
            raise DistutilsSetupError(
                "in 'ext_modules' option (extension '%s'), 'sources' must be present and must be a list of source filenames"
                % ext.name
            )
        sources = list(sources)
        ext_path = self.get_ext_fullpath(ext.name)
        depends = sources + ext.depends
        if not (self.force or newer_group(depends, ext_path, "newer")):
            log.debug("skipping '%s' extension (up-to-date)", ext.name)
            return
        log.info("building '%s' extension", ext.name)
        sources = self.swig_sources(sources, ext)
        extra_args = ext.extra_compile_args or []
        macros = ext.define_macros[:]
        for undef in ext.undef_macros:
            macros.append((undef,))

        objects = self.compiler.compile(
            sources,
            output_dir=self.build_temp,
            macros=macros,
            include_dirs=ext.include_dirs,
            debug=self.debug,
            extra_postargs=extra_args,
            depends=ext.depends,
        )
        self._built_objects = objects[:]
        if ext.extra_objects:
            objects.extend(ext.extra_objects)
        extra_args = ext.extra_link_args or []
        language = ext.language or self.compiler.detect_language(sources)
        self.compiler.link_shared_object(
            objects,
            ext_path,
            libraries=self.get_libraries(ext),
            library_dirs=ext.library_dirs,
            runtime_library_dirs=ext.runtime_library_dirs,
            extra_postargs=extra_args,
            export_symbols=self.get_export_symbols(ext),
            debug=self.debug,
            build_temp=self.build_temp,
            target_lang=language,
        )

    def swig_sources(self, sources, extension):
        """Walk the list of source files in 'sources', looking for SWIG
        interface (.i) files.  Run SWIG on all that are found, and
        return a modified 'sources' list with SWIG source files replaced
        by the generated C (or C++) files.
        """
        new_sources = []
        swig_sources = []
        swig_targets = {}
        if self.swig_cpp:
            log.warn("--swig-cpp is deprecated - use --swig-opts=-c++")
        if self.swig_cpp or "-c++" in self.swig_opts or "-c++" in extension.swig_opts:
            target_ext = ".cpp"
        else:
            target_ext = ".c"
        for source in sources:
            base, ext = os.path.splitext(source)
            if ext == ".i":
                new_sources.append(base + "_wrap" + target_ext)
                swig_sources.append(source)
                swig_targets[source] = new_sources[-1]
            else:
                new_sources.append(source)

        if not swig_sources:
            return new_sources
        else:
            swig = self.swig or self.find_swig()
            swig_cmd = [swig, "-python"]
            swig_cmd.extend(self.swig_opts)
            if self.swig_cpp:
                swig_cmd.append("-c++")
            if not self.swig_opts:
                for o in extension.swig_opts:
                    swig_cmd.append(o)

            for source in swig_sources:
                target = swig_targets[source]
                log.info("swigging %s to %s", source, target)
                self.spawn(swig_cmd + ["-o", target, source])

            return new_sources

    def find_swig(self):
        """Return the name of the SWIG executable.  On Unix, this is
        just "swig" -- it should be in the PATH.  Tries a bit harder on
        Windows.
        """
        if os.name == "posix":
            return "swig"
        if os.name == "nt":
            for vers in ("1.3", "1.2", "1.1"):
                fn = os.path.join("c:\\swig%s" % vers, "swig.exe")
                if os.path.isfile(fn):
                    return fn
            else:
                return "swig.exe"

        else:
            raise DistutilsPlatformError(
                "I don't know how to find (much less run) SWIG on platform '%s'"
                % os.name
            )

    def get_ext_fullpath(self, ext_name):
        """Returns the path of the filename for a given extension.
        
        The file is located in `build_lib` or directly in the package
        (inplace option).
        """
        fullname = self.get_ext_fullname(ext_name)
        modpath = fullname.split(".")
        filename = self.get_ext_filename(modpath[-1])
        if not self.inplace:
            filename = os.path.join(*modpath[:-1] + [filename])
            return os.path.join(self.build_lib, filename)
        else:
            package = (".").join(modpath[0:-1])
            build_py = self.get_finalized_command("build_py")
            package_dir = os.path.abspath(build_py.get_package_dir(package))
            return os.path.join(package_dir, filename)

    def get_ext_fullname(self, ext_name):
        """Returns the fullname of a given extension name.
        
        Adds the `package.` prefix"""
        if self.package is None:
            return ext_name
        else:
            return self.package + "." + ext_name

    def get_ext_filename(self, ext_name):
        r"""Convert the name of an extension (eg. "foo.bar") into the name
        of the file from which it will be loaded (eg. "foo/bar.so", or
        "foo\bar.pyd").
        """
        from distutils.sysconfig import get_config_var

        ext_path = ext_name.split(".")
        ext_suffix = get_config_var("EXT_SUFFIX")
        return (os.path.join(*ext_path)) + ext_suffix

    def get_export_symbols(self, ext):
        """Return the list of symbols that a shared extension has to
        export.  This either uses 'ext.export_symbols' or, if it's not
        provided, "PyInit_" + module_name.  Only relevant on Windows, where
        the .pyd file (DLL) must export the module "PyInit_" function.
        """
        initfunc_name = "PyInit_" + ext.name.split(".")[-1]
        if initfunc_name not in ext.export_symbols:
            ext.export_symbols.append(initfunc_name)
        return ext.export_symbols

    def get_libraries(self, ext):
        """Return the list of libraries to link against when building a
        shared extension.  On most platforms, this is just 'ext.libraries';
        on Windows, we add the Python library (eg. python20.dll).
        """
        if sys.platform == "win32":
            from distutils._msvccompiler import MSVCCompiler

            if not isinstance(self.compiler, MSVCCompiler):
                template = "python%d%d"
                if self.debug:
                    template = template + "_d"
                pythonlib = template % (
                    sys.hexversion >> 24,
                    sys.hexversion >> 16 & 255,
                )
                return ext.libraries + [pythonlib]
            return ext.libraries
        else:
            if sys.platform[:6] == "cygwin":
                template = "python%d.%d"
                pythonlib = template % (
                    sys.hexversion >> 24,
                    sys.hexversion >> 16 & 255,
                )
                return ext.libraries + [pythonlib]
            if sys.platform[:6] == "atheos":
                from distutils import sysconfig

                template = "python%d.%d"
                pythonlib = template % (
                    sys.hexversion >> 24,
                    sys.hexversion >> 16 & 255,
                )
                extra = []
                for lib in sysconfig.get_config_var("SHLIBS").split():
                    if lib.startswith("-l"):
                        extra.append(lib[2:])
                    else:
                        extra.append(lib)

                return ext.libraries + [pythonlib, "m"] + extra
            if sys.platform == "darwin":
                return ext.libraries
            if sys.platform[:3] == "aix":
                return ext.libraries
            from distutils import sysconfig

            if sysconfig.get_config_var("Py_ENABLE_SHARED"):
                pythonlib = ("python{}.{}{}").format(
                    sys.hexversion >> 24,
                    sys.hexversion >> 16 & 255,
                    sysconfig.get_config_var("ABIFLAGS"),
                )
                return ext.libraries + [pythonlib]
            return ext.libraries
